RITO MATHS?

1 body shot from guardian supposedly does -65 dmg but it takes your shield down to 7 and health down to 79 ------------> 150 - 65 = 85 but 7+79=86
1 body shot from vandal supposedly does -40 dmg but its take your shield down to 24 and health down to 87 --------------> 150 - 40 = 110 but 24 + 87 = 111

AM I MISSING SOMETHING?

Yeah but

I just read this 3 times and still have no idea

Nobody is trying to do math on this website bud

Your shield makes you take 25% less dmg

because the graphic on screen rounds off.
66% damage is absorbed by shield and 33% damage goes to health. 0.66 of 65 is 42.9, not 43 but they dont show decimals and round it off which is why your shield goes to 7 but its actually 7.1